From: "Massimo S." Received: from [192.168.100.201] (HELO mail.2rosenthals.com) by 2rosenthals.com (CommuniGate Pro SMTP 5.4.10) with ESMTP id 671102 for ecs-isp@2rosenthals.com; Fri, 06 Feb 2026 02:53:39 -0500 Received: from [192.168.200.201] (port=47526 helo=mail2.2rosenthals.com) by mail.2rosenthals.com with esmtp (Exim 4.98.2) (envelope-from ) id 1voGeg-000000005yn-14JY for ecs-isp@2rosenthals.com; Fri, 06 Feb 2026 02:53:31 -0500 Received: from mail2.quasarbbs.net ([80.86.52.115]:10040) by mail2.2rosenthals.com with esmtp (Exim 4.98.2) (envelope-from ) id 1voGeY-000000002Co-09Hd for ecs-isp@2rosenthals.com; Fri, 06 Feb 2026 02:53:23 -0500 X-SASI-Hits: BODYTEXTP_SIZE_3000_LESS 0.000000, BODY_SIZE_1000_LESS 0.000000, BODY_SIZE_2000_LESS 0.000000, BODY_SIZE_5000_LESS 0.000000, BODY_SIZE_600_699 0.000000, BODY_SIZE_7000_LESS 0.000000, CTE_7BIT 0.000000, DKIM_ALIGNS 0.000000, DKIM_SIGNATURE 0.000000, HTML_00_01 0.050000, HTML_00_10 0.050000, IN_REP_TO 0.000000, LEGITIMATE_SIGNS 0.000000, MSGID_SAMEAS_FROM_HEX_844412 0.100000, MSG_THREAD 0.000000, NO_CTA_URI_FOUND 0.000000, NO_URI_FOUND 0.000000, NO_URI_HTTPS 0.000000, REFERENCES 0.000000, REPLYTO_SAMEAS_FROM 0.000000, SENDER_NO_AUTH 0.000000, SUSP_DH_NEG 0.000000, TO_IN_SUBJECT 0.500000, USER_AGENT 0.000000, __BODY_NO_MAILTO 0.000000, __BOUNCE_CHALLENGE_SUBJ 0.000000, __BOUNCE_NDR_SUBJ_EXEMPT 0.000000, __CT 0.000000, __CTE 0.000000, __CT_TEXT_PLAIN 0.000000, __DKIM_ALIGNS_1 0.000000, __DKIM_ALIGNS_2 0.000000, __DQ_NEG_DOMAIN 0.000000, __DQ_NEG_HEUR 0.000000, __DQ_NEG_IP 0.000000, __FORWARDED_MSG 0.000000, __FROM_DOMAIN_NOT_IN_BODY 0.000000, __FROM_NAME_NOT_IN_ADDR 0.000000, __FROM_NAME_NOT_IN_BODY 0.000000, __FUR_HEADER 0.000000, __HAS_FROM 0.000000, __HAS_MSGID 0.000000, __HAS_REFERENCES 0.000000, __HAS_REPLYTO 0.000000, __HEADER_ORDER_FROM 0.000000, __IN_REP_TO 0.000000, __MAIL_CHAIN 0.000000, __MIME_BOUND_CHARSET 0.000000, __MIME_TEXT_ONLY 0.000000, __MIME_TEXT_P 0.000000, __MIME_TEXT_P1 0.000000, __MIME_VERSION 0.000000, __MOZILLA_USER_AGENT 0.000000, __MSGID_HEX_844412 0.000000, __NO_HTML_TAG_RAW 0.000000, __REFERENCES 0.000000, __REPLYTO_SAMEAS_FROM_ACC 0.000000, __REPLYTO_SAMEAS_FROM_ADDY 0.000000, __REPLYTO_SAMEAS_FROM_DOMAIN 0.000000, __SANE_MSGID 0.000000, __SCAN_D_NEG 0.000000, __SCAN_D_NEG2 0.000000, __SCAN_D_NEG_HEUR 0.000000, __SCAN_D_NEG_HEUR2 0.000000, __SL_HEAVY 0.000000, __SUBJ_ALPHA_END 0.000000, __SUBJ_ALPHA_NEGATE 0.000000, __SUBJ_REPLY 0.000000, __TO_IN_SUBJECT 0.000000, __TO_MALFORMED_2 0.000000, __TO_NAME 0.000000, __TO_NAME_DIFF_FROM_ACC 0.000000, __TO_REAL_NAMES 0.000000, __URI_NO_MAILTO 0.000000, __USER_AGENT 0.000000 X-SASI-Probability: 10% X-SASI-RCODE: 200 X-SASI-Version: Antispam-Engine: 5.1.4, AntispamData: 2026.2.6.72719 X-SASI-Hits: BODYTEXTP_SIZE_3000_LESS 0.000000, BODY_SIZE_1000_LESS 0.000000, BODY_SIZE_2000_LESS 0.000000, BODY_SIZE_5000_LESS 0.000000, BODY_SIZE_600_699 0.000000, BODY_SIZE_7000_LESS 0.000000, CTE_7BIT 0.000000, DKIM_ALIGNS 0.000000, DKIM_SIGNATURE 0.000000, HTML_00_01 0.050000, HTML_00_10 0.050000, IN_REP_TO 0.000000, LEGITIMATE_SIGNS 0.000000, MSGID_SAMEAS_FROM_HEX_844412 0.100000, MSG_THREAD 0.000000, NO_CTA_URI_FOUND 0.000000, NO_URI_FOUND 0.000000, NO_URI_HTTPS 0.000000, REFERENCES 0.000000, REPLYTO_SAMEAS_FROM 0.000000, SUSP_DH_NEG 0.000000, TO_IN_SUBJECT 0.500000, USER_AGENT 0.000000, __AUTH_RES_PASS 0.000000, __BODY_NO_MAILTO 0.000000, __BOUNCE_CHALLENGE_SUBJ 0.000000, __BOUNCE_NDR_SUBJ_EXEMPT 0.000000, __CT 0.000000, __CTE 0.000000, __CT_TEXT_PLAIN 0.000000, __DKIM_ALIGNS_1 0.000000, __DKIM_ALIGNS_2 0.000000, __DQ_NEG_DOMAIN 0.000000, __DQ_NEG_HEUR 0.000000, __DQ_NEG_IP 0.000000, __FORWARDED_MSG 0.000000, __FROM_DOMAIN_NOT_IN_BODY 0.000000, __FROM_NAME_NOT_IN_ADDR 0.000000, __FROM_NAME_NOT_IN_BODY 0.000000, __FUR_HEADER 0.000000, __HAS_FROM 0.000000, __HAS_MSGID 0.000000, __HAS_REFERENCES 0.000000, __HAS_REPLYTO 0.000000, __HEADER_ORDER_FROM 0.000000, __IN_REP_TO 0.000000, __MAIL_CHAIN 0.000000, __MIME_BOUND_CHARSET 0.000000, __MIME_TEXT_ONLY 0.000000, __MIME_TEXT_P 0.000000, __MIME_TEXT_P1 0.000000, __MIME_VERSION 0.000000, __MOZILLA_USER_AGENT 0.000000, __MSGID_HEX_844412 0.000000, __NO_HTML_TAG_RAW 0.000000, __REFERENCES 0.000000, __REPLYTO_SAMEAS_FROM_ACC 0.000000, __REPLYTO_SAMEAS_FROM_ADDY 0.000000, __REPLYTO_SAMEAS_FROM_DOMAIN 0.000000, __SANE_MSGID 0.000000, __SCAN_D_NEG 0.000000, __SCAN_D_NEG2 0.000000, __SCAN_D_NEG_HEUR 0.000000, __SCAN_D_NEG_HEUR2 0.000000, __SL_HEAVY 0.000000, __SUBJ_ALPHA_END 0.000000, __SUBJ_ALPHA_NEGATE 0.000000, __SUBJ_REPLY 0.000000, __TO_IN_SUBJECT 0.000000, __TO_MALFORMED_2 0.000000, __TO_NAME 0.000000, __TO_NAME_DIFF_FROM_ACC 0.000000, __TO_REAL_NAMES 0.000000, __URI_NO_MAILTO 0.000000, __USER_AGENT 0.000000 X-SASI-Probability: 10% X-SASI-RCODE: 200 X-SASI-Version: Antispam-Engine: 5.1.4, AntispamData: 2026.2.6.72719 DKIM-Signature: v=1; q=dns/txt; a=rsa-sha256; c=relaxed/relaxed; s=default; d=ecomstation.it; bh=IUFLNRXX0EbvGocE/Z7Ask+RUlUlGPINmVK/dlUjxcc=; h=Return-Path:From:To:Subject:Date:Message-ID; b=Cqi9oF2VgE2VsvkfQsJpJxuajSFGZjqNHxQ5ProWhFgVVcbJB/tmYC7v1vQR3Wks4zfqJ 46ez5yPWaRm97w9/BczHRLUa5hoRVs/ZTHMJZjcMsSsbzdQcPTHPCdKQIiTI5RQRmDQWJs+ yZJUSLQW6maklohgpRbbVjJS7Od9PRyWqFEVPNW0L2JJ5T6Y4/TxrOtgdJ8GWdPERIgj9C5 A3iukXwCdPwvxkec8VkLdxdcw2kwZo7Ls4u/xvGfCnZjMucFaypsiZ1orGWiSW0g0ChU1Qb 03pmoxq+/JxjYXhtX4GToPG8j0/EF7s5WRkJcrlfj+93JgcLZBKgRvBLOuIw== Received: from [192.168.10.199] (dtp [192.168.10.199]) by srv2 (Weasel v3.098) for ; Fri, 06 Feb 2026 08:53:14 -0000 Reply-To: ml@ecomstation.it Subject: Re: [eCS-ISP] DDOS attacks and tcp/ip SYNCOOKIE flag To: eCS ISP Mailing List References: Organization: Massimo S. Message-ID: <349ce6b0-90dd-698c-1d74-8a7ff9096030@ecomstation.it> Date: Fri, 6 Feb 2026 08:53:15 +0100 User-Agent: Mozilla/5.0 (OS/2; U; Warp 4.5; it-IT; rv:1.7.13) Gecko/20060424 Thunderbird/1.0.8 Mnenhy/0.7.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: it Content-Transfer-Encoding: 7bit